Fiber optic sensor array

Details Fiber optic sensor array Fiber optic sensor array

G - Physics

01

D

G01D 5/26 (2006.01) G01D 5/12 (2006.01) G01D 5/353 (2006.01) G01H 9/00 (2006.01) G02B 6/28 (2006.01)

Patent

CA 2039597

ABSTRACT A fiber optic array for detecting and communicating the state of a plurality of spatially remote variables includes a plurality of switchable optical couplers. The couplers are located between fiber optic sense coils that cause responsive phase shifts in optical pulses launched through the array. The couplers are controlled by the parallel outputs of shift registers so that a coupler is only "on" for the period of time required to couple out a portion of the optical energy of a pulse after passage through the adjacent sense coil and is thereafter shut "off" to minimize crosstalk between the sensors and to optimize the output optical power.

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